Louisiana Surface Impoundments regulations & environmental compliance analysis

Louisiana Surface Impoundments: What you need to know

Governing Law and Regulations

Surface impoundment requirements: Louisiana Administrative Code (LAC) 33:V.2901 to 33:V.2919 and LAC 33:V.4447 to 33:V.4462 (interim status)

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Organic air emissions rules: LAC 33:V.1717 to 33.V.1767, LAC 33:V.1799, LAC 33:V.4561 to 33:V.4589, and LAC 33:V.4719 to 33:V.4739 (interim status)

Design and operation standards:

Liners: LAC 33:V.2903.A

Surface runoff: LAC 33:V.2903.G and LAC 33:V.2903.H

Notification rules: LAC 33:V.2909

Regulatory Agency

Louisiana Department of Environmental Quality (DEQ) Office of Environmental Compliance Enforcement Division

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Louisiana's hazardous waste surface impoundment requirements include the federal rules and the state's more stringent requirements for existing and new facility design and operation, DEQ notification, facility fees, and post-closure.

Administration and enforcement. DEQ's Office of Environmental Compliance administers and enforces the surface impoundment requirements in Louisiana, including the federal air emissions standards.

State Requirements



LAC 33:V.2903.A

In addition to complying with the applicable federal provisions for surface impoundment liners, Louisiana requires facilities to have:

  • A permanent barrier of at least 3 feet of clay with a permeability of 1 x 10 to the minus 7 cm/sec or less and designed and operated to prevent endangering any freshwater aquifer from the migration of contaminants from the facility
  • A synthetic liner laid on top of the permanent barrier at the bottom and sides of the impoundment that will cover all surrounding ...

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